install gulp

user/themes/anissabensalah/node_modules/es5-ext/math/cosh/implement.js

@@ -0,0 +1,8 @@
+"use strict";
+
+if (!require("./is-implemented")()) {
+	Object.defineProperty(Math, "cosh", { value: require("./shim"),
+		configurable: true,
+enumerable: false,
+writable: true });
+}

user/themes/anissabensalah/node_modules/es5-ext/math/cosh/index.js

@@ -0,0 +1,5 @@
+"use strict";
+
+module.exports = require("./is-implemented")()
+	? Math.cosh
+	: require("./shim");

user/themes/anissabensalah/node_modules/es5-ext/math/cosh/is-implemented.js

@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = function () {
+	var cosh = Math.cosh;
+	if (typeof cosh !== "function") return false;
+	return cosh(1) === 1.5430806348152437;
+};

user/themes/anissabensalah/node_modules/es5-ext/math/cosh/shim.js

@@ -0,0 +1,11 @@
+"use strict";
+
+var exp = Math.exp;
+
+module.exports = function (value) {
+	if (isNaN(value)) return NaN;
+	value = Number(value);
+	if (value === 0) return 1;
+	if (!isFinite(value)) return Infinity;
+	return (exp(value) + exp(-value)) / 2;
+};